stimator comparison
在stata中,我们会用以下command 去做estimator的对比
Estimator comparison
* Compare various estimators (with cluster-robust se.s)
. global xlist exp exp2 wks ed
. quietly regress lwage $xlist, vce(cluster id)
. estimates store OLS
. quietly xtgee lwage exp exp2 wks ed, corr(ar 2)
vce(robust)
. estimates store PFGLS
. quietly xtreg lwage $xlist, be
. estimates store BE
. quietly xtreg lwage $xlist, re vce(robust)
. estimates store RE
. quietly xtreg lwage $xlist, fe vce(robust)
. estimates store FE
. estimates table OLS PFGLS BE RE FE, b(%9.4f) se stats(N)
但是在这段command中的最后一行,b(%9.4f) se stats(N) 是什么意思???求指点和帮助!谢谢!o
A. Colin Cameron Univ. of California - Davis (Based on A. Colin Cameron and Praveconometrics using Stat